Support for various languages

src/AnalyzeView/GeoTagPage.qml

@@ -138,7 +138,7 @@ AnalyzePage {
                 }
             }
             QGCLabel {
-                text:               geoController.saveDirectory === "" ? (geoController.imageDirectory === "" ? "/TAGGED folder in your image folder" : geoController.imageDirectory + "/TAGGED") : geoController.saveDirectory
+                text:               geoController.saveDirectory === "" ? (geoController.imageDirectory === "" ? qsTr("/TAGGED folder in your image folder") : geoController.imageDirectory + qsTr("/TAGGED")) : geoController.saveDirectory
                 elide:              Text.ElideLeft
                 Layout.fillWidth:   true
                 Layout.alignment:   Qt.AlignVCenter

src/AnalyzeView/MavlinkConsolePage.qml

@@ -274,7 +274,7 @@ AnalyzePage {
                 QGCTextField {
                     id:               commandInput
                     Layout.fillWidth: true
-                    placeholderText:  "Enter Commands here..."
+                    placeholderText:  qsTr("Enter Commands here...")
                     inputMethodHints: Qt.ImhNoAutoUppercase
 
                     function sendCommand() {

src/AutoPilotPlugins/APM/APMCameraSubComponent.qml

@@ -195,12 +195,12 @@ SetupPage {
 
             QGCCheckBox {
                 id:     _allVisible
-                text:   "Show all settings (advanced)"
+                text:   qsTr("Show all settings (advanced)")
             }
 
             QGCLabel {
                 visible:     !_oldFW
-                text:        "Camera mount tilt speed:"
+                text:        qsTr("Camera mount tilt speed:")
                 font.family: ScreenTools.demiboldFontFamily
             }
 

src/AutoPilotPlugins/Common/ESP8266ComponentSummary.qml

@@ -31,7 +31,7 @@ Item {
         }
         VehicleSummaryRow {
             labelText: qsTr("WiFi Mode")
-            valueText: wifiMode ? (wifiMode.value === 0 ? "AP Mode" : "Station Mode") : "AP Mode"
+            valueText: wifiMode ? (wifiMode.value === 0 ? qsTr("AP Mode") : qsTr("Station Mode")) : qsTr("AP Mode")
         }
         VehicleSummaryRow {
             labelText:  qsTr("WiFi Channel")

src/AutoPilotPlugins/Common/SyslinkComponent.qml

@@ -103,7 +103,7 @@ SetupPage {
                         Layout.fillWidth:   true
                         font.pointSize:     ScreenTools.smallFontPointSize
                         wrapMode:           Text.WordWrap
-                        text:               "Address in hex. Default is E7E7E7E7E7."
+                        text:               qsTr("Address in hex. Default is E7E7E7E7E7.")
                     }
 
 
@@ -123,7 +123,7 @@ SetupPage {
                     }
 
                     QGCButton {
-                        text:                           "Restore Defaults"
+                        text:                           qsTr("Restore Defaults")
                         width:                          textEditWidth
                         onClicked: {
                             controller.resetDefaults()

src/AutoPilotPlugins/PX4/CameraComponentSummary.qml

@@ -52,7 +52,7 @@ Item {
         VehicleSummaryRow {
             visible:    _camTriggerPol
             labelText:  qsTr("AUX pin polarity")
-            valueText:  _camTriggerPol ? (_camTriggerPol.value ? "High (3.3V)" : "Low (0V)") : ""
+            valueText:  _camTriggerPol ? (_camTriggerPol.value ? qsTr("High (3.3V)") : qsTr("Low (0V)")) : ""
         }
 
     }

src/AutoPilotPlugins/PX4/PX4FlightBehaviorCopter.qml

@@ -77,7 +77,7 @@ SetupPage {
                 QGCLabel {
                     visible:            _sys_vehicle_resp && _sys_vehicle_resp.value > 0.8
                     color:              qgcPal.warningText
-                    text:              "Warning: a high responsiveness requires a vehicle with large thrust-to-weight ratio. The vehicle might lose altitude otherwise."
+                    text:              qsTr("Warning: a high responsiveness requires a vehicle with large thrust-to-weight ratio. The vehicle might lose altitude otherwise.")
                 }
             }
 

src/AutoPilotPlugins/PX4/PX4SimpleFlightModes.qml

@@ -186,7 +186,7 @@ Item {
             } // Row - Settings
 
             QGCButton {
-                text: "Use Multi Channel Mode Selection"
+                text: qsTr("Use Multi Channel Mode Selection")
                 onClicked: {
                     controller.getParameterFact(-1, "RC_MAP_MODE_SW").value = 5
                     controller.getParameterFact(-1, "RC_MAP_FLTMODE").value = 0

src/FactSystem/FactControls/FactTextFieldSlider.qml

@@ -62,7 +62,7 @@ Row {
                 anchors.verticalCenter: parent.verticalCenter
 
                 QGCLabel {
-                    text:                   "Value: "
+                    text:                   qsTr("Value: ")
                     anchors.verticalCenter: parent.verticalCenter
                 }
 

src/FlightDisplay/MultiVehicleList.qml

@@ -61,12 +61,12 @@ Item {
                 spacing:            _margin
 
                 QGCButton {
-                    text:       "Pause"
+                    text:       qsTr("Pause")
                     onClicked:  _guidedController.confirmAction(_guidedController.actionMVPause)
                 }
 
                 QGCButton {
-                    text:       "Start Mission"
+                    text:       qsTr("Start Mission")
                     onClicked:  _guidedController.confirmAction(_guidedController.actionMVStartMission)
                 }
             }
@@ -148,31 +148,31 @@ Item {
                     spacing: ScreenTools.defaultFontPixelWidth
 
                     QGCButton {
-                        text:       "Arm"
+                        text:       qsTr("Arm")
                         visible:    _vehicle && !_vehicle.armed
                         onClicked:  _vehicle.armed = true
                     }
 
                     QGCButton {
-                        text:       "Start Mission"
+                        text:       qsTr("Start Mission")
                         visible:    _vehicle && _vehicle.armed && _vehicle.flightMode !== _vehicle.missionFlightMode
                         onClicked:  _vehicle.startMission()
                     }
 
                     QGCButton {
-                        text:       "Pause"
+                        text:       qsTr("Pause")
                         visible:    _vehicle && _vehicle.armed && _vehicle.pauseVehicleSupported
                         onClicked:  _vehicle.pauseVehicle()
                     }
 
                     QGCButton {
-                        text:       "RTL"
+                        text:       qsTr("RTL")
                         visible:    _vehicle && _vehicle.armed && _vehicle.flightMode !== _vehicle.rtlFlightMode
                         onClicked:  _vehicle.flightMode = _vehicle.rtlFlightMode
                     }
 
                     QGCButton {
-                        text:       "Take control"
+                        text:       qsTr("Take control")
                         visible:    _vehicle && _vehicle.armed && _vehicle.flightMode !== _vehicle.takeControlFlightMode
                         onClicked:  _vehicle.flightMode = _vehicle.takeControlFlightMode
                     }

src/MissionManager/MissionSettingsItem.h

@@ -71,8 +71,8 @@ public:
     bool            isStandaloneCoordinate      (void) const final { return false; }
     bool            specifiesCoordinate         (void) const final;
     bool            specifiesAltitudeOnly       (void) const final { return false; }
-    QString         commandDescription          (void) const final { return "Mission Start"; }
+    QString         commandDescription          (void) const final { return tr("Mission Start"); }
-    QString         commandName                 (void) const final { return "Mission Start"; }
+    QString         commandName                 (void) const final { return tr("Mission Start"); }
     QString         abbreviation                (void) const final;
     QGeoCoordinate  coordinate                  (void) const final { return _plannedHomePositionCoordinate; } // Includes altitude
     QGeoCoordinate  exitCoordinate              (void) const final { return _plannedHomePositionCoordinate; }

src/PlanView/PlanToolBarIndicators.qml

@@ -58,13 +58,13 @@ Item {
 
     property string _distanceText:              isNaN(_distance) ?              "-.-" : QGroundControl.unitsConversion.metersToAppSettingsHorizontalDistanceUnits(_distance).toFixed(1) + " " + QGroundControl.unitsConversion.appSettingsHorizontalDistanceUnitsString
     property string _altDifferenceText:         isNaN(_altDifference) ?         "-.-" : QGroundControl.unitsConversion.metersToAppSettingsHorizontalDistanceUnits(_altDifference).toFixed(1) + " " + QGroundControl.unitsConversion.appSettingsHorizontalDistanceUnitsString
-    property string _gradientText:              isNaN(_gradient) ?              "-.-" : _gradient.toFixed(0) + " deg"
+    property string _gradientText:              isNaN(_gradient) ?              "-.-" : _gradient.toFixed(0) + qsTr(" deg")
     property string _azimuthText:               isNaN(_azimuth) ?               "-.-" : Math.round(_azimuth) % 360
     property string _headingText:               isNaN(_azimuth) ?               "-.-" : Math.round(_heading) % 360
     property string _missionDistanceText:       isNaN(_missionDistance) ?       "-.-" : QGroundControl.unitsConversion.metersToAppSettingsHorizontalDistanceUnits(_missionDistance).toFixed(0) + " " + QGroundControl.unitsConversion.appSettingsHorizontalDistanceUnitsString
     property string _missionMaxTelemetryText:   isNaN(_missionMaxTelemetry) ?   "-.-" : QGroundControl.unitsConversion.metersToAppSettingsHorizontalDistanceUnits(_missionMaxTelemetry).toFixed(0) + " " + QGroundControl.unitsConversion.appSettingsHorizontalDistanceUnitsString
-    property string _batteryChangePointText:    _batteryChangePoint < 0 ?       "N/A" : _batteryChangePoint
+    property string _batteryChangePointText:    _batteryChangePoint < 0 ?       qsTr("N/A") : _batteryChangePoint
-    property string _batteriesRequiredText:     _batteriesRequired < 0 ?        "N/A" : _batteriesRequired
+    property string _batteriesRequiredText:     _batteriesRequired < 0 ?        qsTr("N/A") : _batteriesRequired
 
     readonly property real _margins: ScreenTools.defaultFontPixelWidth
 
@@ -115,7 +115,7 @@ Item {
         font.pointSize:         ScreenTools.largeFontPointSize
         horizontalAlignment:    Text.AlignHCenter
         verticalAlignment:      Text.AlignVCenter
-        text:                   "Done"
+        text:                   qsTr("Done")
         visible:                false
     }
 

src/QmlControls/HeightIndicator.qml

@@ -10,7 +10,7 @@ ColumnLayout {
     spacing:    0
 
     property var map
-    property string heightText: "30 ft"
+    property string heightText: qsTr("30 ft")
 
     property color _textColor:  _mapPalette.text
 

src/QmlControls/PIDTuning.qml

@@ -117,7 +117,7 @@ RowLayout {
         min:            0
         max:            0
         labelFormat:    "%.2f"
-        titleText:      "sec"
+        titleText:      qsTr("sec")
         tickCount:      11
     }
 

src/QmlControls/ParameterEditorDialog.qml

@@ -228,12 +228,12 @@ QGCViewDialog {
 
             QGCLabel {
                 visible:    fact.vehicleRebootRequired
-                text:       "Vehicle reboot required after change"
+                text:       qsTr("Vehicle reboot required after change")
             }
 
             QGCLabel {
                 visible:    fact.qgcRebootRequired
-                text:       "Application restart required after change"
+                text:       qsTr("Application restart required after change")
             }
 
             QGCLabel {

src/QmlControls/RCChannelMonitor.qml

@@ -79,7 +79,7 @@ Item {
                 anchors.fill:           parent
                 horizontalAlignment:    Text.AlignHCenter
                 verticalAlignment:      Text.AlignVCenter
-                text:                   "Not Mapped"
+                text:                   qsTr("Not Mapped")
                 visible:                !mapped
             }
 
@@ -101,7 +101,7 @@ Item {
 
         QGCLabel {
             Layout.columnSpan:  parent.columns
-            text:               "Channel Monitor"
+            text:               qsTr("Channel Monitor")
         }
 
         Connections {

src/QtLocationPlugin/QMLControl/OfflineMap.qml

@@ -647,7 +647,7 @@ Item {
                     spacing:                _margins
 
                     QGCButton {
-                        text:       "Show zoom previews"
+                        text:       qsTr("Show zoom previews")
                         visible:    !_showPreview
                         onClicked:  _showPreview = !_showPreview
                     }

src/VehicleSetup/FirmwareUpgrade.qml

@@ -46,11 +46,11 @@ SetupPage {
             readonly property string highlightSuffix:   "</font>"
             readonly property string welcomeText:       qsTr("%1 can upgrade the firmware on Pixhawk devices, SiK Radios and PX4 Flow Smart Cameras.").arg(QGroundControl.appName)
             readonly property string welcomeTextSingle: qsTr("Update the autopilot firmware to the latest version")
-            readonly property string plugInText:        "<big>" + highlightPrefix + "Plug in your device" + highlightSuffix + " via USB to " + highlightPrefix + "start" + highlightSuffix + " firmware upgrade.</big>"
+            readonly property string plugInText:        "<big>" + highlightPrefix + qsTr("Plug in your device") + highlightSuffix + qsTr(" via USB to ") + highlightPrefix + qsTr("start") + highlightSuffix + qsTr(" firmware upgrade.") + "</big>"
-            readonly property string flashFailText:     "If upgrade failed, make sure to connect " + highlightPrefix + "directly" + highlightSuffix + " to a powered USB port on your computer, not through a USB hub. " +
+            readonly property string flashFailText:     qsTr("If upgrade failed, make sure to connect ") + highlightPrefix + qsTr("directly") + highlightSuffix + qsTr(" to a powered USB port on your computer, not through a USB hub. ") +
-                                                        "Also make sure you are only powered via USB " + highlightPrefix + "not battery" + highlightSuffix + "."
+                                                        qsTr("Also make sure you are only powered via USB ") + highlightPrefix + qsTr("not battery") + highlightSuffix + "."
-            readonly property string qgcUnplugText1:    qsTr("All %1 connections to vehicles must be ").arg(QGroundControl.appName) + highlightPrefix + " disconnected " + highlightSuffix + "prior to firmware upgrade."
+            readonly property string qgcUnplugText1:    qsTr("All %1 connections to vehicles must be ").arg(QGroundControl.appName) + highlightPrefix + qsTr(" disconnected ") + highlightSuffix + qsTr("prior to firmware upgrade.")
-            readonly property string qgcUnplugText2:    highlightPrefix + "<big>Please unplug your Pixhawk and/or Radio from USB.</big>" + highlightSuffix
+            readonly property string qgcUnplugText2:    highlightPrefix + "<big>" + qsTr("Please unplug your Pixhawk and/or Radio from USB.") + "</big>" + highlightSuffix
 
             readonly property int _defaultFimwareTypePX4:   12
             readonly property int _defaultFimwareTypeAPM:   3

src/ui/preferences/MavlinkSettings.qml

@@ -546,11 +546,11 @@ Rectangle {
                             textRole:   "text"
                             model: ListModel {
                                 id: windItems
-                                ListElement { text: "Please Select"; value: -1 }
+                                ListElement { text: qsTr("Please Select"); value: -1 }
-                                ListElement { text: "Calm";     value: 0 }
+                                ListElement { text: qsTr("Calm");     value: 0 }
-                                ListElement { text: "Breeze";   value: 5 }
+                                ListElement { text: qsTr("Breeze");   value: 5 }
-                                ListElement { text: "Gale";     value: 8 }
+                                ListElement { text: qsTr("Gale");     value: 8 }
-                                ListElement { text: "Storm";    value: 10 }
+                                ListElement { text: qsTr("Storm");    value: 10 }
                             }
                             onActivated: {
                                 saveItems();
@@ -584,12 +584,12 @@ Rectangle {
                             textRole:   "text"
                             model: ListModel {
                                 id: ratingItems
-                                ListElement { text: "Please Select";            value: "notset"}
+                                ListElement { text: qsTr("Please Select");            value: "notset"}
-                                ListElement { text: "Crashed (Pilot Error)";    value: "crash_pilot" }
+                                ListElement { text: qsTr("Crashed (Pilot Error)");    value: "crash_pilot" }
-                                ListElement { text: "Crashed (Software or Hardware issue)";   value: "crash_sw_hw" }
+                                ListElement { text: qsTr("Crashed (Software or Hardware issue)");   value: "crash_sw_hw" }
-                                ListElement { text: "Unsatisfactory";           value: "unsatisfactory" }
+                                ListElement { text: qsTr("Unsatisfactory");           value: "unsatisfactory" }
-                                ListElement { text: "Good";                     value: "good" }
+                                ListElement { text: qsTr("Good");                     value: "good" }
-                                ListElement { text: "Great";                    value: "great" }
+                                ListElement { text: qsTr("Great");                    value: "great" }
                             }
                             onActivated: {
                                 saveItems();

src/ui/toolbar/JoystickIndicator.qml

@@ -58,12 +58,12 @@ Item {
 
                     QGCLabel { text: qsTr("Connected:") }
                     QGCLabel {
-                        text:  joystickManager.activeJoystick ? "Yes" : "No"
+                        text:  joystickManager.activeJoystick ? qsTr("Yes") : qsTr("No")
                         color: joystickManager.activeJoystick ? qgcPal.buttonText : "red"
                     }
                     QGCLabel { text: qsTr("Enabled:") }
                     QGCLabel {
-                        text:  globals.activeVehicle && globals.activeVehicle.joystickEnabled ? "Yes" : "No"
+                        text:  globals.activeVehicle && globals.activeVehicle.joystickEnabled ? qsTr("Yes") : qsTr("No")
                         color: globals.activeVehicle && globals.activeVehicle.joystickEnabled ? qgcPal.buttonText : "red"
                     }
                 }